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J. Nelson Chadderdon
jnc@oceanwaveconsulting.com
Oceanwave Consulting, Inc.
127 Echo Cove Rd.
Hamilton, MA 01982
978-232-9535 x201
EXPERIENCE:
- Spring 2000 - Present:
ThermoFisher (formerly Thermo, formerly Orion Research), Beverly, MA.
- Software upgrades to existing product line and consulting on
embedded system software and hardware design.
- Products and projects included:
- creating a replacement display for an obsolete controller
- software design and implementation of new OEM product line in 3 months
- Adding new software features to an array of existing products
- Design of test software for manufacturing
- Design of software for simulation of large and expensive hardware
- Windows based simulations of products before the hardware existed
- Lead SW developer on ThermoFisher's newest series of 'Star Meters' based on TI's flagship MSP430FG4619 processor
- Spring 2006 - Present:
Foster Miller, Waltham, MA.
- HW and SW design (for TI MSP430) of a safety system, including GPS and cellular communications.
- 2nd generation with additional features to be starting soon
- Spring 2007 - Fall 2007:
Venture Technologies Inc., North Billerica, MA.
Cybex, Medway, MA.
- member of a SW team
- SW architecture and design of Cybex's new 750T tread mill
- Spring 2007 - Fall 2007:
Signal Fire, Swampscott, MA.
- SW and HW design (for TI MSP430) of a hall affect sensor board for measuring positional information to be reported back to a central server
- Spring 2007 - Summer 2007:
ZVOX Audio, Swampscott, MA.
- SW design for a ZVOX audio 415 and 425 products
- Summer 2006 - Spring 2007:
Cambridge Soundworks, North Andover, MA.
- user interface SW design for a table top consumer HD Radio.
- SW modifications to an older product line to allow use of an ipod
- Spring 2005 - Summer 2007:
Tivoli Audio, Boston, MA.
- digital HW and SW design (for TI MSP430) of consumer audio electronics for Tivoli's Music System
- Spring 2006 - Fall 2007:
Venture Technologies Inc., North Billerica, MA.
Russound, New Market, NH.
- SW design for a new Abus keypad (the KP5LCD and KPSC)
- Spring 2006 - Summer 2006:
Venture Technologies Inc., North Billerica, MA.
Matrix, Hudson, NH.
- Added SW features to an existing Matrix product, the result was the Matrix Hydra DT
- Spring 2006:
Venture Technologies Inc., North Billerica, MA.
- SW design and HW debugging of a USB motor controller board
- Winter 2005: Taylor River Real Time, LLC
- Authored a well received online article . The article can be read on their web page, or here.
- Spring 2002 - Winter 2004:
Cambridge Soundworks, North Andover, MA.
- HW and SW design of consumer audio electronics
- Winter 2000 - Summer 2001:
Venture Technologies Inc., North Billerica, MA.
- Hardware and software design of consumer electronic games.
- Design and implement cost sensitive HW involving quarter VGA
display, LCD controller, and 16 bit (Infineon C161PI) micro
- Software was entirely written using a PC simulator as the actual
HW was unavailable at the start of the project
- Winter 1999 - Winter 2000:
Cambridge Soundworks, Newton, MA.
- Embedded Software and Hardware Engineering Consultant. Helped
with Model 88CD product design and implementation.
- Winter 1998 - Spring 2000:
Venture Technologies Inc., North Billerica, MA.
Foxboro Company, Foxboro, MA.
- Embedded Software and Hardware Engineering Consultant. Worked
with a Real Time Operating System on the Siemens 166 family of micro
controllers to develop and document a series of industrial monitors;
including conductivity, resistivity, and pH of
liquids.
- Fall 1997:
Orion Research, Beverly, MA.
- Embedded Software Engineering Consultant. Wrote software upgrades to
existing line of laboratory equipment to perform specific functions
for a non-technical chemistry environment. Wrote software
specification for changes to existing products.
- Embedded Hardware Engineering Consultant. Made hardware changes to an
existing 80154 based product to combine features of another product.
- Summer 1993 - Summer 1997: Analog and Digital Systems (aka, a/d/s/) Woburn, MA. Design Engineer
- Designed control hardware and software for high end audio equipment using
the Intel 8051 family of micro controllers. Limited software and hardware work
on Motorola 56K DSPs.
- Engineer in charge of first generation a/d/s/ multi-zone audio systems
maintenance, including upkeep of the SC6 system controller's software and
hardware.
- Engineer in charge of product specification and design of second
generation a/d/s/ multi-zone products, DOMINET II, winner of
CES's Innovations 97 award.
- Summer 1992 - Summer 1994 Data Lite
Woodstock, NY.
- Software Engineer. Design of Algorithms and Source Code: Wrote and
debugged programs in 80x86 assembly, C, and FoxPRO. Programs included music
and sound reproduction, video capturing and recognition, and API code for
FoxPRO.
- Fall 1991 - Summer 1993 Clarkson University undergraduate ECE Lab,
Potsdam, NY.
- Technical Lab Assistant. Assisted students with class projects. Repaired
lab equipment and maintained lab computers.
SOFTWARE KNOWLEDGE:
Familiar with SPARC, RS6000, Amiga, Apple II, Machintosh (68K, G3, G4, and G5), and IBM PC/AT architectures
as well as VMS, UNIX (SYSV and BSD), and MS-DOS operating systems. Have done
extensive programming in Lisp, Prolog, Small Talk, C, Pascal, Fortran, Basic,
TI MSP430, 8x86 and 8051 assembly language, FoxPRO, DCL script files, Perl, YACC and UNIX
shell programming. I have written applications using embedded
real-time operating systems (such as QNX, CMX, and uCOS), as well as real-time critical
applications without the use of an RTOS. I have also done programming
for MS Windows (3.x, 95, 98, 2000, & XP), and the X Window system.
HARDWARE KNOWLEDGE:
Familiar with TI MSP430, Microchip PIC, Atmel AT-mega, Intel 8051 and 80x86
families and Infineon 166 family of micro-processors /
micro-controllers as well as Motorola 56K series DSPs. Familar with IAR and Keil C-compiler
and debugging enviroments. Designed
projects have used but are not limited to the following technologies:
74 and 4000 series logic, GALs, PALs, ROMs, SRAMs, UARTs, E2ROM, FRAM,
flash, I2C bus, SPI bus, RS232, RS485, and RS422 bus drivers, VF and LCD
displays, analog to digital and digital to analog converts, op-amps,
and power supply design. Familiar with Orcad, Protel and Viewlogics
schematic capture and PADS PCB layout.
EDUCATION:
© 1997-2008 Oceanwave Consulting, Inc. All rights reserved.
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